# NTSB Accident SEA00LA129
> **Kaman K-1200** · 2000-07-11 · CUSICK, WA, USA · SERS
## Event
- **NTSB number:** SEA00LA129
- **Event ID:** 20001212X21608
- **Type:** Accident
- **Date:** 2000-07-11
- **Location:** CUSICK, WA, USA
- **Coordinates:** 48.509346, -117.369995
## Injuries
- **Highest injury:** SERS
- **Fatal:** 0
- **Serious:** 1
- **Minor:** 0
- **Uninjured:** 0
- **Total aboard:** 1
## Aircraft
- **Make:** Kaman
- **Model:** K-1200
- **Registration:** N311KA
- **FAR Part:** 133
- **Engines:** 1
- **Damage:** SUBS
## Conditions
- **Light:** DAYL
- **Weather:** VMC
## Probable cause

The termination of power to the main rotor system as a result of the malfunction of the free-wheeling sprag clutch assembly, followed by the torsional overload separation of the engine adapter shaft. Factors include trees in the area where the emergency descent was attempted.

---
*Source: [NTSB CAROL](https://data.ntsb.gov/carol-main-public/basic-search?source=ntsb&type=event&ntsb_number=SEA00LA129) · AI Analytics · CC0 1.0*